4 Doubles Mule

Obverse description	The obverse displays the legend 'ST. HELENA' arcing across the upper field and 'HALFPENNY' along the lower field, with the date '1821' prominently placed in the central field. The entire central design is enclosed within a wreath of laurel or olive branches tied at the base, with a decorative sprig at the apex. A beaded border encircles the entire design. This face derives from the St. Helena Halfpenny die of 1821, making this piece a mule combining two unrelated coin dies.
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Obverse lettering	ST HELENA 1821 HALFPENNY
Reverse description	The reverse presents the denomination '4' in a large numeral at the top of the field, followed by 'DOUBLES' in bold raised letters across the centre, and the date '1830' in large numerals below, all set within a plain field. A continuous beaded border runs around the periphery of the coin. The design is stark and typographic, without any ornamental wreath or additional motifs, consistent with early Guernsey coinage reverse dies of the period.
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